RESTRICTED CASH (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$ 18,716	$ 6,541	$ 18,716
Decrease in restricted cash		(12,175)	(7,300)	$ (3,397)
Cash in escrow for surety bonds (a)
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	2,453	2,453	2,453
Cash in escrow for corporate purchasing card program
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	100	0	100
Cash restricted for loan loss obligations (d)
Restricted Cash and Cash Equivalents Items [Line Items]
Decrease in restricted cash	3,100
Other
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	57	60	57
Lending Tree Loans | Discover Bank | Cash in escrow from sale of LendingTree Loans
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$ 16,106	4,028	$ 16,106
Decrease in restricted cash		$ 12,100